According to the latest results, almost 30 percent of 12th graders reported using some kind of vaping device within the past year. And out of that group, a little more than 11 percent said they had vaped marijuana or hash oil.

"When you vape (NI) THC, you can actually vape at a very high concentration," NIDA Director Dr. Nora Volkow said during a recent podcast about the survey's findings. "And the higher the concentration of THC, the higher the likelihood of addiction and adverse medical consequences. "

In addition, past year marijuana use (when data is combined from all three grade levels) increased slightly – from 22.6 percent to 23.9 percent.

However, in encouraging news, the number of teens misusing painkillers has decreased during the last decade. For example, the survey found that 4.2 percent of 12th graders misused pain medication during the past year. This percentage is down from its highest point in 2004, which was 9.5 percent.